I can recommend the book "Moving On", which discusses a participatory economy, which was quite interesting to me personally. although it does (as you would expect) bog down with committees!

By the way, the shortest and most succinct laymen's description of anarchism came from a crimethinc flier i saw, possibly this one [low res PDF] http://thecloud.crimethinc.com/pdfs/fighting_for_our_lives_l...